package rong;

public abstract class Node<T extends Comparable<T>, N extends Node<T, N>> {
	protected T data;
	protected N parrent;
	protected N left;
	protected N right;
	
	public String toString() {
		String s = "";
		s+= "(" + data;
		s+= ","+left;
		s+= ","+right;
		s+=")";
		return s;
	}
}
